The phrase "at certificate level" is correct and usable in written English.
It can be used to refer to a specific level of education or qualification, typically in the context of academic or vocational training.
Example: "The course is designed for students who have completed their studies at certificate level."
Alternatives: "at diploma level" or "at qualification level".
If you want a serious career in TEFL, you need an internationally recognised qualification: The British Council does not accredit qualifications, but for our own purposes we require that our teachers have a qualification, at least at certificate level that is about 100 to 120 hours in length and has six to 10 hours observed and assessed teaching practice.
Primary training lasts 2.5 years for the enrolled nurses at certificate level, and registered nurses undergo either a 3.5-year diploma course or a 4-year degree (BScN) programme.
Of the 205 trainees who entered the 3-year programme during 2007 2009, 116 completed successfully and have graduated with an MSc degree (57%), 36 (18%) completed at Diploma level, 26 (13%) completed at Certificate level, 4 (2%) have returned from an interruption of study, and 23 (11%) withdrew early with no award.
In those day, to matriculate, you had to get six credits at school certificate level.
I now teach chemistry at leaving certificate level, as well as physics.
Those with bachelor's-level qualifications (many of them nurses) entered at postgraduate certificate level, taking a course that was in essence a response to the role change demanded by the district health system.
A majority of health workers had at least a certificate level of education, with the most qualified working at the highest level health centre.
The University of Sheffield's Japanese studies MA (which can also be taken at diploma and certificate level) has a strong emphasis on language skills and offers two entry streams: one for beginners and one for intermediate learners.
The trainer is targeted to be used in the teaching of control theory modules at the diploma and certificate level for engineering students.
In Australia, the Productivity Commission has set the qualification for practitioners working with children birth-2 at Certificate 111 level (Goodstart Early Learning 2015).
Campus MBA offers several programs with three levels: achievement level, certificate level and specialist level.
