Hi martina1990,
Sorry to hear about your refusal.
I have a couple of questions to ask before I can suggest you something.
1. When was the first rejection? If it was a student visa application, what program did you choose during that time?
2. If you have a plan to open Private Kindergarten in your country, do you need a special license or training to be completed before you can apply for that license? If no, then why you haven’t open it yet.
3. Are you currently working as an HR (Human resources) officer?
I always recommend business program to working professional if they ever want to apply for a student visa application.
Also, I would recommend you to apply for ATIP (GCMS notes) to find out the actual reason and then rather than applying for new student visa application, send a reconsideration letter (Informal request) to visa officer to reconsider your file. This is not an official application and there is no time limit for that but it has to be done in a reasonable time. So get your GCMS notes which will take around 30 days and find the reasons in GCMS notes and based on that draft a reconsideration letter and send to visa office.
Good luck with your application!
Regards,