I have some questions regarding H1B. Last time I applied for the H1-B but unfortunately I missed the quota limit. Thanks to Indian outsourcing firm. But anyway after that I joined the college for Master program. Now my employer is again filing for H1B on April. Firstly, my question is if I get H1B on April. Do I have to go back to college for Fall semester on August. Since H1B is valid only after October.
Secondly, if I get H1B can I apply for CPT to work until October.

Please give me suggestions and advice.