The Change of Status Application from H4 to F1 is currently pending with USCIS from DEC 26 2017.
The H4 - I94 expires on JUN 30 2018.
In this case is it necessary to apply H4 Extension when result of COS is still pending or is it fine to wait for COS result even after I 94 expiry ?
Please respond ASAP.

Vamshi K