Teaching Large ESL Classes in Thailand: Practical Strategies for New Teachers

Facing a large ESL class for the first time can feel overwhelming. How do you give clear instructions, keep everyone involved, and help students speak English when you cannot pay attention to everyone?

These challenges can feel even more daunting without an ESL textbook, which is a common situation Catherine describes in her blog about teaching in rural-based Thai schools. With limited resources and many students to support, effective lesson planning and consistent routines become especially valuable.

If your first teaching job in Thailand involves a large class, these foundations can make your workload more manageable while helping students learn. The aim is to create a classroom where students understand what to do, have the language they need, and get frequent opportunities to participate.

1. Plan Around One Achievable Communicative Outcome

A large class becomes harder to manage when a lesson contains too many aims or disconnected activities. Choose an observable communicative outcome, such as students asking and answering questions about their weekend routines.

PPP and ESA lesson planning frameworks give new teachers a practical structure for setting clear communicative aims and plan activities that build toward that outcome. Both communicative-based frameworks are effective for teaching large ESL classes.

2. Make Clear Instructions

An unclear instruction can leave several groups waiting while you repeat yourself around the room. Prepare short instructions and demonstrate the activity before distributing materials.

For a partner interview, show a sample exchange with a student. Explain who starts, what each person records, and when they switch roles. Leave the task steps and an example on the board. Begin with one exchange, check that pairs have started correctly, and then let them continue.

3. Use Pair Work to Increase Speaking Opportunities

When students answer one at a time in front of the class, most spend the activity listening or waiting. Pair work allows many learners to speak simultaneously.

For large classes, establish familiar partnerships with the student next to each learner. Fixed-desk classrooms do not need to prevent communicative practice.

Build a reason to listen into the task. After interviewing a partner, students might identify two shared interests or choose an activity they would both enjoy. This gives the conversation a purpose beyond taking turns reading questions.

4. Create Information Gaps Without Unnecessary Movement

An information-gap activity gives students different information that they need to exchange to complete a task.

For example, give partners different versions of a weekly club timetable. Student A asks about missing days or times, while Student B checks their own timetable and answers. Both record the missing information without showing their sheets.

Model the questions first and provide language support where needed. If printing is limited, use reusable A/B cards. Keep students seated initially; introduce activities involving movement once they can follow the routines reliably.

5. Give Group Work Clear Roles and an Outcome

Putting students into groups does not guarantee participation. Confident learners may dominate while others wait for someone else to finish.

For a group planning task, assign roles such as facilitator, recorder, timekeeper, and reporter. Rotate these roles across lessons, and require an individual contribution before the group makes its decision.

Students planning a class outing could each suggest an option, ask a follow-up question, and help agree on a final choice. A shared outcome gives the discussion direction, while individual preparation helps more learners enter it.

6. Support Mixed Proficiency Through the Same Core Task

Students may need different levels of support to complete the same activity. Prepare a common task with optional scaffolding and a meaningful extension.

During a shopping role-play, some learners might use picture prompts and sentence starters. Others can work from a shorter word bank. Students ready for an additional challenge could compare products, explain preferences, or solve a problem with an unavailable item.

Avoid making the extension simply more questions. Aim for greater independence or more complex communication. Also avoid routinely assigning stronger students to teach their classmates; they need opportunities to develop their own English.

7. Teach Routines That Protect Learning Time

Plan procedures for starting lessons, distributing materials, getting attention, changing partners, and finishing activities. Demonstrate and practise them as you would a language task.

Agree on an attention signal and a realistic speaking volume. During pair work, productive conversation will create noise; the key question is whether students are communicating and can respond when you need their attention.

Address problems calmly and consistently, following school procedures. Where possible, discuss individual concerns privately rather than interrupting the whole class or embarrassing a learner.

8. Monitor With a Specific Purpose

You cannot listen closely to every student during every activity. Choose a monitoring focus linked to the lesson aim.

During a routine interview, listen for question formation and whether students respond appropriately to their partners. Follow a route around the room and note which pairs you have checked, so the same students do not receive all your attention.

During fluency work, collect useful examples and recurring errors for feedback afterward. Intervene immediately when students cannot continue or have misunderstood the task.

9. Check Everyone’s Learning

“Does everyone understand?” gives limited evidence of what students can do. Use quick responses that make each learner’s understanding visible.

Students can write an answer in a notebook, compare it with a partner, or hold up a response card. Finish with a short exit task connected to the aim: for example, write one accurate question about routines and one sentence about a partner.

Use these responses to decide what needs review. A lively activity is valuable, but participation and learning still need to be checked.

Build Confidence Through Consistent Practice

Teaching a large ESL class in Thailand requires preparation, flexibility, and knowledge of your particular students. Start with a small number of reliable routines and activities, then expand as learners become familiar with them.

Practical TEFL training can help you connect lesson aims, language support, communicative activities, and classroom management. With these elements working together, a large class can offer frequent opportunities for students to practise English and learn from one another.