Platforms use different language to describe their teacher standards, and the difference between “required” and “preferred” is significant. A platform that requires CELTA or equivalent is making a different commitment from one that prefers teachers with qualifications or simply states that teachers are experienced. These categories sound similar in marketing. They represent very different standards.
This page explains how to read and compare teacher qualification requirements across children’s English platforms, what the common categories mean in practice, and what questions to ask when the profile page shows less than you need to make an informed choice.
Required vs preferred vs not stated: what the difference actually means for parents
Three Categories of Qualification Language
• Required. The platform has a stated minimum that all teachers must meet to be listed. This should be verifiable by asking the support team for the specific requirement and how it is enforced.
• Preferred. The platform encourages but does not enforce a qualification standard. Individual teacher profiles may or may not show any credential. What is displayed varies.
• Not stated. The platform’s public documentation uses general terms like “qualified teacher” or “experienced instructor” without naming a specific credential. This is the most common category and the most ambiguous.
Parents comparing platforms should ask specifically which category applies, because the marketing language used on homepages almost never distinguishes between them clearly.
What Profile Pages Typically Show
Teacher profile pages vary enormously in what they display. Some show the specific certificate name, the issuing body, the year obtained, and years of experience with children. Others show a star rating and a short biography. The gap between the most transparent profiles and the least is wide enough to affect how reliably a parent can assess a teacher before booking.
| Profile Information | What It Tells You | What to Ask If Missing |
| Certificate name | Which qualification was completed | Which specific certificate? |
| Issuing body | Whether the qualification is from a recognised provider | Who issued it? |
| Years of experience | Rough indicator, not quality measure | How many students under 10? |
| Background check status | Whether identity and history are verified | What does the check cover? |
| Sample lesson video | Direct evidence of teaching style | Can I see a sample before booking? |
What “Verified” Means on a Profile
When a profile shows a “verified” badge or checkmark, ask what specifically was verified. On some platforms, verification means the teacher submitted a document scan. On others, it means the platform independently confirmed the credential with the issuing body. These are very different levels of verification.
Ask the platform directly: what does the verification badge on a teacher profile confirm, and who conducted the verification? A clear answer indicates a genuine process. A vague or circular answer does not.
Where 51Talk Fits In
What 51Talk is
51Talk is a live one-on-one English platform for children with 25-minute structured lessons, qualified teachers, CEFR-aligned curricula, and post-lesson feedback. Details and teacher profiles at 51talk.com.
How to assess 51Talk’s teacher qualification standards
51Talk works with teachers who complete a training and evaluation process before being assigned to students. Parents can view teacher profiles on the platform. Before booking, ask the support team: what minimum qualification is required to teach on the platform, is that requirement named on the teacher’s profile page, and has the specific credential been verified by the platform or accepted on submission?
What to keep in mind
The information displayed on a profile page may not be the same as the full qualification record held by the platform. Ask specifically whether more information is available on request. A confident platform will provide it.
Before You Enrol: Questions to Ask Any Platform
• What is the minimum qualification required to teach on this platform? Required, not preferred.
• Is that qualification named on the teacher’s profile page? Stated vs displayed.
• Was the qualification independently verified, or self-reported? Ask how verification works.
• Does the platform require child-specific teaching experience? Separate from general EFL qualification.
• What does the “verified” badge on a profile actually confirm? Name the specific elements.
Frequently Asked Questions
Can I see a 51Talk teacher’s specific qualifications before booking a lesson?
51Talk’s teacher profiles are viewable on the platform. For information beyond what is displayed on a standard profile, contact 51Talk’s support team and ask what qualification information is available and how the platform verifies credentials. Visit 51talk.com to access profiles and support.
What is the difference between a required and a preferred qualification on a teaching platform?
“Required” means every teacher on the platform must hold this qualification or cannot be listed. “Preferred” means the platform encourages it but does not enforce it, so some teachers will have the qualification and others will not. When comparing platforms, ask which category applies and ask for the specific standard, not just the category name.
Should I choose a platform that requires CELTA over one that accepts TEFL?
Not necessarily. CELTA is more consistently rigorous, but a platform that requires CELTA from all teachers and maintains strong training and child-specific experience requirements may produce better outcomes than one that requires CELTA alone with no child-focused pedagogy component. Look at the full standard, not just the headline qualification name.
How do I know whether a teacher’s qualification is genuine?
For CELTA, you can verify independently through Cambridge’s certificate checking service. For TEFL and TESOL, ask the teacher or platform which specific provider issued the certificate and contact that provider to confirm. If neither the platform nor the teacher can name the issuing body, the certificate has not been meaningfully verified.
What to Do Next
Ask the five questions above for any platform you are seriously considering. Compare the answers against the three categories above: required, preferred, or not stated. A platform where qualifications are stated as required and are visibly named on profiles, with a documented verification process, is providing a meaningfully higher standard than one where profiles say only “experienced teacher.” Take a trial lesson and assess whether the teacher’s actual correction behaviour reflects their stated qualifications.