Thomas
Gueguen.
CELTA-certified ESL teacher. I personally verify, print, and teach with every resource featured on ESL Materials.
Quick details
- Credentials
- CELTA · Cambridge
- Certified 2018
- Contexts
- Adult ed · Corporate · Online
- Bouygues · Veolia · Preply
- Languages
- EN · FR · ES
- Working proficiency
- Cadence
- Quarterly audits
- Reviews re-tested
Why ESL Materials exists.
My name is Thomas Gueguen, and I am a CELTA-certified ESL teacher. Since earning my CELTA from Cambridge in 2018, I have taught in adult education programs in France, corporate training groups (including Bouygues and Veolia), and one-to-one settings online.
I founded ESL Materials because teachers waste countless hours filter-searching worksheets and platforms. We do not need another directory containing thousands of worksheets; we need a curated, tested shortlist of materials that respect both a teacher's schedule and a student's intelligence.
Six steps before any platform makes the shortlist.
- 01
Personal investment
I pay for premium tiers with my own money to test from a regular teacher's perspective.
- 02
Content sampling
I audit representative guides and worksheets across diverse levels to evaluate depth.
- 03
Real classroom run
I teach with the resource in my own courses, tracking engagement and feedback.
- 04
Multi-week durability
Two weeks of lessons minimum — beyond a single novelty class.
- 05
Comparative review
I measure the platform against free and premium alternatives to verify the pricing.
- 06
Quarterly audits
When pricing, features, or layouts change, reviews are updated within 30 days.
What I refuse to recommend.
Trust is built on filters. I deliberately exclude the following from this site:
AI-generated worksheet mills
Low-quality sheets that teach incorrect syntax, have no editorial oversight, and lack classroom validation.
Template cloaking packages
Collections promising 5,000+ files that are subtle copy-paste variations of the same basic worksheets.
Account friction blocks
Worksheets that force students to set up accounts just to complete a routine reading list.
Editorial bias
Affiliate sponsorships that override my honest reviews. If a paid platform degrades, I remove it.
Where I have taught.
Adult immigrant programs
Southwestern France (Béarn) — supporting learners preparing for A1 to B1 integrations.
Corporate workshops
English language training programs for teams at Bouygues and Veolia.
Digital one-on-one
Online adult tutoring for European and North American professionals (Preply, italki).
Community seminars
TOEIC prep and adult community courses at the local English Workshop in Oloron.
Worksheets are confidence-building devices, not just paper tasks. A well-designed resource gives learners dignity, clarity, and safety to try, fail, and improve.
— Thomas Gueguen, on teaching philosophy
Reach out.
For corrections, suggestions, partnership inquiries, or to share your own classroom experience with a platform we have reviewed.