We started an IT college in South Africa offering IT qualifications only and have been struggling to attract students. When we do get students, mostly don't qualify to enroll for the programmes according to the National Qualification Framework. I come from a software development background and have no marketing experience which has made it difficult to market the institution. We have a very limited budget and need simple but effective ideas to implement for our marketing strategy. We have used social media but it has not translated into the leads we need.
What you plan to do is not destructing and if this is what you plan to do, you need to know whether is there really a market can afford to pay you money to attend the class?
I strongly suspect your challenges are:
1. whether it really available market that can pay
2. lack of publicity and public education of such needs
3. insufficient brand name/ reputation to give confidence to the students and local educators to support
There are many alternate approaches available:
1. Check this out https://byjus.com/ (but you need very rich investors)
2. post your training into a web platform with the good market place (e.g. www.udemy.com).
3. look for a good mentor who is very experienced in startup business like yours
4. don't start marketing unnecessary when you cannot answer the 3 challenges above ...
The above are my comments based on my over 20 years of experiences as an entrepreneur and management consultant- hope it is of some help.