Question

Grammar help please, with form of verb "to be" below:
1. We would pay more attention to what we teach if we knew our syllabi are subject to intense scrutiny.
OR
2. We would pay more attention to what we teach if we knew our syllabi were subject to intense scrutiny.
OR
3. We would pay more attention to what we teach if we knew our syllabi would be subjected to intense scrutiny.

Answer 1

To be

Present tense:
I am We are
You are You are
He/She/It is They are

Past tense:
I was We were
You were You were
He/She/It was They were

Perfect Form (past participle)
I have been, etc.

Progressive Form (present participle)
I am being, etc.

Answer 2

if we knew . . . would be subjected