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Question

since then as Ukraine became independent there were many changes in an education system. many institutes are transformed to universities and academies. There were many private higher education institutions, all higher education institutions share on four levels of accreditation for example: colleges, institutes and technical training college have the first and second level of accreditation. Universities have the third and fourth level of accreditation. There are three main types of the higher education in Ukraine: full-time department correspondence department and evening. Some students receive grants.

Михаил Швецов · Accepted Answer

then as - убрать 
transformed to universities - вместо to in 
Some OF students receive grants. 
 
Я не поняла последние предложения. Там же тоже должно быть время Past Simple, а не Present Simple

Ольга Осютина · Answer

Since the time (when) Ukraine became independent there has been many changes in its educational system. Many institutes have been transformed into universities and academies.There are many private higher education institutions. Each of the higher education institutions is assigned one of four different levels of accreditation. For example, colleges, institutes and technical training colleges have the first and second level of accreditation. Universities have the third and fourth level of accreditation. There are three main types of higher education institutions in Ukraine, providing full-time, correspondence and evening education. Some students receive grants.