H1 Extension based on previous employer's approved I-140 beyond 6 years

Yes, it is possible to obtain an AC-21 extension base don the I-140 Petition of a previous employer that has not been revoked or withdrawn.

What could have happen

It can take many months. You need to follow-up with the USCIS if you think it is taking too long.

I-485 RFE - Priority date becoming current

Any RFE can cause processing delays, however, this should not hurt you unless there is further retrogression in the priority dates.

Can a person out of status get into school?

This would depend on the school's admission policies.

What does reopened means?

It means that the case is pending and under review again.

How much time i need to get the approval for my reinstatement ?

Humanitarian Reinstatement requests can take several months.

When do I get a multi year EAD card?

Check the USCIS website for EAD policies. www.uscis.gov

Currently on L1B visa expiring on August-2014, Also I have filed for Asylum and the case is pending. This year company applied

The asylum case will not bridge your nonimmigrant status.

The domicile requirement stems from the affidavit of support rules. The Petitioner must sign an affidavit of support and any such affiant must be...

RFE on H1 for CPT

These are common RFE issues. You need to obtain all requested evidence and should discuss with an immigration attorney.