School Leadership
Carolina Sam
Head of School, Mother of 3
International educational background:
11 years experience in Early Childhood Education
Former School Principal of Hong Kong’s renowned kindergarten (Victoria Shanghai Academy)
Curriculum Coordinator (International Baccalaureate Organization)
Certified PreK-G12 Teacher (BC College of Teachers in British Columbia, Canada)
Masters of Linguistics
Bachelor of Early Childhood Education
Bachelor of Arts, University of British Columbia, Canada

Carolina often identifies with ElastiGirl, often stretching her arms and legs whipping through tasks effectively with a big heart. With a passion for education, cheesecakes, drumming and Muay Thai, Carolina spends her weekends baking in the morning, jamming in the home-studio in the afternoon, and doing 100 left kicks at night. She is an unstoppable force of nature, and leads the Trehaus School team in pursuing the unimaginable – raising changemakers of the future.

Sheila Eng
Principal, Mother of 1
11 years experience in local Early Childhood Industry
Bachelor of Science (Early Childhood Educational Studies & Leadership), Wheelock College
Diploma in Early Childhood Education, Ngee Ann Polytechnic

Whether coaching beginner skiers on the bunny hill or guiding little ones to write their first word, Sheila believes there are no failures, only room for improvements. She is a dedicated school principal and also a certified ski instructor with NZSIA who wishes every day for cooler weather in sunny Singapore. Sheila’s ‘why not’ attitude inspires her to push boundaries in the early childhood industry with a team of like-minded educators, and nurture little changemakers.

Wang Chien-Yu
Curriculum Head, Mother of 2
Illinois Professional Educator License Early Childhood (Birth to Grade 2)
Endorsement in Early Childhood Special Education
Master of Education, Early Childhood Education, University of Illinois at Chicago
Master of Business Administration, National Taiwan University

Chien-Yu is a book addict and is now on her 1444th book. She is inspired by words of forward thinking educators and changemakers. When she’s not reading, she is busy finding ways to integrate everything she is inspired by into her life. She applies this passion and talent in planning the most meaningful curriculum for the children at Trehaus School.

Elaine Kim
Founder, Mother of 3
Bachelor of Medicine, Bachelor of Surgery (M.B.B.S), National University of Singapore

Elaine is a medical doctor, entrepreneur and traveller. She is driven by her faith and a desire to make the world a better place. Currently that means building Trehaus – to change the workplace for working parents like herself and her VC husband John, and making the much-needed changes in early education a reality. Her youngest son Nate is going to Trehaus School, so it has to be the best preschool ever.

Elizabeth Wu
Founder & Director of School, Mother of 3
Post-Graduate Diploma in Education, National Institute of Education (Singapore)
Bachelor of Communication Studies (Hons), Wee Kim Wee School of Communication & Information, Nanyang Technological University
Certified Instructor for Parent Effectiveness Training, Gordon Training International
Professional Certificate in Early Education Leadership, Harvard Graduate School of Education

Elizabeth is an entrepreneur & educator by day, and parent-coach, writer and mom to her three big kids by night. She has stood in classrooms of all educational levels, from preschool and primary to secondary and university, and coaches, teaches and designs curriculum. She believes that children can be effectively raised to be responsible, caring and possessing empathy if we speak the language of acceptance to them.

Angela Rose Castaneda
Mentor-Teacher (English)
7 years teaching experience
BSc (Hons) Early Childhood Education, Wheelock College
Diploma in Early Childhood Education, Temasek Polytechnic

Angela describes herself as a mixture between Leslie Knope from Parks and Recreation, and Amy Santiago from Brooklyn-99 – with a caffeine addiction. Angela values the importance of expressing emotions in a healthy way, and seeing the potential of every individual regardless of their background, gender, who they are and where they come from. Her mission is to nurture every child who walks into her classroom to be citizens of the world. Driven by dedication, Angela sees herself stimulating children’s curiosity and creativity – and not ignore their innate desire to learn.

Syu Pei-Yi
Lead Teacher (Chinese) & Vice Principal
9 years teaching experience
Master’s Degree in Teaching Chinese as a Foreign Language, National Taiwan Normal University
Bachelor in Child Care and Education, Hungkuang University
Diploma in Child Care and Education

Living in a foreign country has pushed Pei-Yi to develop resilience and a confident outlook as she overcomes the difficulties and challenges that come from being away from home. Though acquiring and mastering a new language may be difficult, Pei-Yi believes that exposure to different languages is important so that children can expand their understanding of the world, as language is an intrinsic part of any culture. Her love for travel and cinema has broadened her perspectives, and has also given her the passion and desire to nurture young children so that they can grow to become global citizens.   

Jefference Tay
Assistant Teacher
Master of Business Administration, Hong Kong University, Hong Kong
Diploma in Early Childhood Teaching, Ngee Ann Polytechnic, Singapore

Jefference has 20 years of working experience as a regional director in the printing and publishing industry under her belt but chose a complete career switch. She’s found her calling and passion in Early Childhood Education and believes that every child is unique and learns at his or her own pace. She wants to enable all children under her charge to learn in a warm and caring, fun and safe environment, and achieve their full potential through appropriate motivation and guidance

Fu Yun-Chia
Teacher (Chinese), Mother of 1
3 years teaching experience
Bachelor of Business Administration Degree, Mingsin University of Science & Technology
Diploma in Early Childhood Education, KLC International Institute

Yun-Chia’s love for children has led her to become an Early Years educator and settling down here in Singapore. She strives to bring her creativity and passion into the classrooms and wants all the children in her charge to discover the Mandarin language in new and engaging ways. Outside of the classroom, Yun-Chia loves the great outdoors and is a nature-lover. She is often inspired to incorporate natural elements in creating resources and teaching Chinese.

Gao Xiaoyu
Teacher (Chinese)
5 years teaching experience
Diploma in Preschool Education, Jianghan Art Vocational College

Xiaoyu enjoys sharing her love for music and performance with children. She believes that every child’s personality and creativity is something an educator needs to respect, and hopes to develop character and confidence for every young heart in her class. An avid learner herself, she has picked up the Korean language and studies it in her free time. Xiaoyu is also a music lover and plays the piano in her free time.

Lois Yeo
Lead Teacher (English)
10 years teaching experience in Early Childhood Education
Bachelor of Early Childhood Education, Deakin University
Diploma in Early Childhood Care and Education, SEED Institute
Diploma in Civil Aviation, Republic Polytechn

Lively and bursting with energy, there’s always a song perfect for every moment in Lois’ world. In her free time, Lois can be found at the latest café haunts or catching up on the latest Korean dramas. Her love for art, craft and music ignites her desire to make learning fun and engaging for the children in her care and she truly embraces what they say – ‘play is a child’s work’!

Jasmine Tang
Teacher (English), Mother of 2
2 years caregiving experience with Trehaus (Crèche)
Diploma in Business Studies (Marketing)
Diploma in Early Childhood Education, NIEC

Armed with a warm smile and ready with open arms, Jasmine is always ready to lend a listening ear and share a comforting hug with a child having a rough day. “Treat a child as though she already is the person she is capable of becoming.” (Haim Ginott) Jasmine embraces this quote by providing the safe space and adequate time for each child in her classroom to explore, play, learn and grow. In her free time, Jasmine enjoys scouring for the best deals and spending time with her family, especially her two daughters!

Yap Shi Lee
Lead Teacher (English) & Curriculum Developer
8 years teaching experience in Early Childhood Education
Lead Teacher (English)
Diploma in Early Childhood Educational Leadership, SEED Institute
Diploma in Early Childhood Studies, Temasek Polytechnic
Growing up as an individual who sees the importance of family and kinships, Shi Lee believes strongly in home-school partnership in her teaching years. Throughout her years of experience, she has witnessed how strong bonds between the home and school have benefitted children holistically. She strives to inculcate and impart important values such as kindness, empathy and appreciation through her interactions with children (and adults!) at Trehaus School. In her free time, she volunteers at non-profit organizations, plays the piano, and… shops online – we could all do with a little relaxation once in a while!
Lin Shan
Lead Teacher (Chinese), Mother of 1
8 years teaching experience in Early Childhood Education Diploma in Early Childhood Education, KLC International Institute
Specialist Diploma in Counselling and Psychology, ACC School of Counselling and Psychology
Lin Shan is a creative at heart whose childhood dream has always been to become an early years educator, and to make a difference in the little ones. She is proud to see her dream come true and do work that she is passionate about. Lin Shan’s talent in watercolour painting, calligraphy and music often lends itself to her work in the classroom – you may even catch her strumming her ukulele in song with the children. Lin Shan endeavours to inculcate the love for learning and spark children’s interest in the Chinese Language through stories, song and dance, among many other enjoyable and meaningful learning experiences at Trehaus School.
Natalie Cheah
Teacher (English) & Curriculum Developer
Bachelor of Arts (Hons) in Philosophy and English Literature, University of Reading
International Baccalaureate Diploma, ISS International School
Diploma in Early Childhood Education (NIEC)

Natalie is a story enthusiast, and loves to explore a good story whether in a book, a good show or even through songs. She enjoys supporting the team and nurturing the children in every aspect of their preschool life. Natalie also works with the curriculum team, constantly observing the children’s interests and incorporating them into their Littles’ projects. She believes in respectful caregiving, effective communication and modelling empathy with the children. She believes in collaboration between parent and teacher, and looks forward to each opportunity to nurture a child’s development.

Joyce Chan
Assistant Teacher (English), Mother of 3
27 years experience in Early Childhood Education
Advanced Certificate in Early Years Development, NIEC
Early Years Development Framework, SEED Institute
Certificate in Infant & Toddler Care & Development, AECES
Certificate in Childcare & Child Development, RTRC Asia Diploma in Pastry & Baking, SHATEC

As a mother of 3 grown-up children driven by passion, Joyce receives unending joy and fulfilment that comes from nurturing little Changemakers. A lover of nature and the great outdoors, Joyce loves hiking and has conquered Mt Kinabalu in 2013 and Mt Fansipan in 2018. Taking on these challenges and tending to her 37 species of plants have shown her how important grit and perseverance are as values that should be instilled in young children. As her favourite artist and author Dr. Seuss writes, “You’ll be on our way up! You’ll be seeing great sights! You’ll join the high fliers who soar to high heights.”

E-Jen Wee
Teacher (English) & Curriculum Developer
3 years International teaching experience
Bachelor of Education (Hons) in Early Years and Primary Education, Monash University, Melbourne
Diploma in Child Psychology and Early Education, Ngee Ann Polytechnic
Certified Early Years and Primary School Teacher, Victorian Institute of Teaching, Melbourne
Being an advocate for intercultural coherence, E-Jen recognises that every child is unique and strives to create a safe and supportive learning environment that embraces diversity, fosters appreciation and celebrates differences. She is committed to becoming co-learners with children, supporting them in every step of the way, in their journey of lifelong learning. As her idol pedagogue Loris Malaguzzi writes, “Learning and teaching should not stand on opposite banks and just watch the river flow by; instead, they should embark together on a journey down the water. Through an active, reciprocal exchange, teaching can strengthen learning how to learn.” A lover of nature and outdoor education, E-Jen enjoys taking nature walks and spends her weekends conducting workshops and camps for children at Forest School Singapore.

Phang Yik Ying
Teacher (Chinese)
5 years of teaching experience in Early Childhood Education
Bachelor in Early Childhood Education, National Taichung University of Education, Taiwan

Yik Ying’s love and passion for young children started at the age of 13 when she realised the joy and fulfilment that comes from teaching and caring for  little ones. This propels her to dream to become the best preschool teacher.  Yik Ying enjoys challenges and her free time is spent solving Sudoku puzzles and enjoying a good detective drama. She recognises the importance of instilling grit and perseverance in children as they overcome new challenges every day. She also loves singing and traveling, and hopes to realise her dream of visiting fifty countries in her lifetime.

Billy Ng Woan Ying
Assistant Teacher (Chinese)
Pursuing Diploma in Early Childhood Education (Mandarin)

Billy is the next Bear Grylls who likes outdoor activities and is not afraid to try new things and explore new places. She believes that children’s curiosity about the world around them is not accidental. Every child brings their personality, ability, imagination and curiosity into daily learning and feels very blessed to be surrounded by their joy and love. 

Yu Lu
Chinese Teacher (Part Time)
9 years teaching experience
5 years tuition experience
Diploma in Early Childhood Education, Qingdao University

Yu Lu is a foodie. When she has coffee and croissant in her hands, every day is a sunny day. She loves hot summer days and enjoys outdoor hiking and sports. Through teaching in different schools in the past 9 years, Yu Lu firmly believes the best way for children to learn is through the initiative to observe, discover and solve problems in real-life experiences meaningful to them.  

Han Nguyen
Associate Teacher (Littles' Programme & Project-based Learning), Mother of 2
Postgraduate Diploma in Legal Practice, Bond University, Australia
Bachelor of Laws, Bond University, Australia
Bachelor of Arts (Sociology & Anthropology), University of British Columbia, Canada
Teachers of English to Speakers of Other Languages (TESOL), British Council
International Baccalaureate Bilingual Diploma (German & English), United World College of S.E.A.
ABRSM Music Theory and Piano Certificates

Han is a legally trained social scientist with a multicultural background. She is in the midst of realizing her dream career as an early childhood educator after 10 years in the legal industry. She has always found it meaningful to watch children blossom into confident, independent, and caring young citizens of the world, but it was not until the arrival of her own twins when she truly found that there was nothing more fulfilling than being a part of that growth. Han speaks English, German, and Vietnamese fluently and has a background teaching music to young children. She believes in the benefits that early exposure to languages and music can offer, especially to not only develop communication, gross motor and social skills but also to nurture a deep appreciation for other cultures from around the world.

Lynn Teo
In-Haus Art Atelierista, Mother of 2
Bachelor of Fine Arts (Hons), School of Visual Arts, New York
Founder and Director of Lil' Palette
Manager of Special Projects, Marketing and Comms, National Gallery Singapore (Contract)

A full-time juggler, Lynn straddles between the roles of being the Creative, the strategist, the entrepreneur, the teacher, the mother, and the wife. As the artist and the left brain of the family, Lynn enjoys decorating and dressing her home up to trend. She also loves sharing arty dialogues with her two daughters and their right-brain father (aka hubby), and has a secret penchant for high teas, desserts, and the colour green!

Dr Natalie Tse
Music Director & In-Haus Sonic Play Specialist, Mother of 2
PhD (Arts), Nanyang Technological University - National Institute of Education
MA (Music), Chinese University of Hong Kong
BA (with Merit) in Communications and New Media, National University of Singapore
Specialist Diploma in Arts Education, National Institute of Education (International)
Letter of Completion, RIE®️ Foundations Course
Certificate of Completion in Teaching the Arts in an Early Childhood Environment, SEED Institute
Founder and Artistic Director, LittleCr3atures™️

Natalie is a performer, educator, researcher whose practice as an experimental improviser has led her towards researching into babies’ sonic play through her doctoral studies and motherhood. As a guzheng (Chinese zither) performer, she has been experimenting with sonic experiences through extended techniques, creating different textures, ambience and emotions evoked through her instrument. She believes that the Arts has the ability to develop children’s awareness of the diversity of cultures in the world, thereby developing understanding, respect and empathy for others.

Our Education Advisory Board
Orly Friedman
Silicon Valley-based Education Expert

Orly is the Entrepreneur-in-Residence with Transcend, working to create a new model of school designed to support student agency. Previously, Orly was part of the founding team of Khan Lab School, serving as Head of Lower School and Assistant Head of School. Orly began her career in education as a Teach for America corps member in Washington, D.C. She spent five years teaching kindergarten - third grade with DCPS. Simultaneously, she created math content for the online learning platform LearnZillion. Orly has spoken on the topic of student agency at education gatherings around the globe including ASU-GSV, NewSchools Venture Fund Summit and the Teach for All Global Conference. She currently serves on the board of Yavneh Day School in Los Gatos, CA.

B.A. in Urban Studies, Yale University
M.A. in Early Childhood Education, George Mason University
M.B.A. , Stanford Graduate School of Business ​

Hannah Kim
Early Years Educator from Leading New York Institutions

Hannah Kim is a passionate New-York based educator, with a deep interest in incorporating social-emotional learning in early education. She was an early years head teacher at New York’s prestigious Chapin School, and is co-chair of the innovative preschool institution, Butler Street Co-op in Brooklyn. She has served as a member of the International Society for Technology in Education, Association for Supervision & Curriculum Development and New York State Association of Independent Schools (

M.A, Cognitive Studies in Education, Columbia University
B.SC, Policy & Management, Minor in Psychology, Carnegie Mellon University​

Louise Cimetta
Apple Education Consultant and Tech-in-Education Expert

Originally training as an early childhood teacher, Lou Cimetta taught across the early years and primary years before moving to leadership positions at school and system level in Australia. Lou is the founder of Blueprint Learning, an independent consultancy supporting the education sector. Lou is currently a leading resource and development executive at Apple supporting local, national and international educational institutions in utilising technology to maximise learning opportunities. As part of this role she opened up new markets, developed education content and designed powerful learning experiences for leaders and educators.

B. Ed (Early Childhood), Edith Cowan University, Australia

Christine Ma-Lau
Leader in Character Education

Christine Ma-Lau is the Founder and Principal of JEMS Learning House in Hong Kong, a leading educational institution that provides Character Education to children. She created the school out of her passion for educating young people in character and values, believing that, as Martin Luther King Jr. said, “Intelligence plus character – that is the goal of true education”. Christine is an Adjunct Professor at The Education University of Hong Kong. She is also the Founder and Chairperson of Character Education Foundation, and a Board Director of Sow Asia and a Founding Director of GeneroCity, both Hong Kong-based philanthropy funds that helps the underprivileged in the city.

M. Ed, University of Pennsylvania
B.A, Economics and Philosophy, London School of Economics.

Teodora Pavkovic

Positive Psychology & Emotional Intelligence Expert

Teodora is a psychologist, international speaker and parenting coach with over 10 years of international experience working with children and parents with emotional and behavioral difficulties, as well as adults with mood and anxiety problems. She is invited to speak, train and facilitate frequently at diverse venues. Her approach is rooted in emotional intelligence and positive psychology practices, as well as neuroscience research and mindfulness, and she has trained in the modalities of CBT, SFBT, hypnotherapy and strategic intervention coaching.

BSc Psychology, UMUC MSc Foundation of Clinical Psychology, Bangor University, UK

Ng Rong Xin

Leader in STEM Learning for Children

Rong Xin is co-founder and CEO of Explorer Junior, an edu-tech start-up that designs and creates STEAM (Science, Technology, Engineering, Art and Mathematics) & Design Thinking-based programs to nurture the curiosity of every child, from as young as 3 years old. Rong Xin also works with different research organizations to explore possible technology applications in education, including with New Zealand-based mixed reality startup QuiverVision to develop interactive and immersive AR (augmented reality) technology and content to enhance learning experience. Rong Xin was previously with the Singapore Ministry of Education (MOE), primarily in Education Management & Info-Systems.

Bachelor of Business Administration (BBA) Honours, National University of Singapore,
Elmo Chong

CEO and Founder of Sonically; CEO and Music Producer of Double Dragon Productions​

Elmo is CEO of Double Dragon Productions, as well as co-founder and CEO of, a music education startup. He is a grammy-nominated music producer who has produced platinum hits for Korean hip-hop artists such as: Rain, Bobby Kim, Drunken Tiger, Yoonmirae, YDG, Lexie, Double K, NCT 127. He was previously also a radio personality with TBS EFM MEDIA in Seoul Korea, where he co-Hosted the station’s #1 Rated Show and developed a popular music educational segment. He now takes his passion and creative talent towards bringing creativity and love for the arts and music into early education.

Dip, B.C.I.T (British Columbia Institute of Technology)