Hello Aspirant,
The preparatory courses are headed by the below mentioned Indian Institute of Technology Branches only though the number of centers are many.
1. IIT Madras
2. IIT Roorkee
3. IIT Guhati
4. IIT Kharagpur
5. IIT Dhanbad
Check out the complete information regarding preparatory courses by visiting the below link -
https://engineering.careers360.com/news/iits-announce-preparatory-course-for-scst-candidates
All the best !
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