[M T]

If the appeals court invalidates convictions, can those that spent time in jail sue(?) to get compensated for that time?

One might think that Singer conned the investigation/prosecution team into being lenient on him because there were all these juicy big-name targets that only he could bring in.   A $22K trailer is not a jail cell.

I'm not a lawyer and don't know the details of each charge or the applicable laws. But it seems to me that conspiracies were between Singer and each set of parent(s).  If Singer, unbeknownst to the parents P, pays person X to perform some illegal act, say, change SAT scores,, I would not normally think that P and X conspired.  P & Singer, yes (depending on whether P was, or should have been, aware that the act they agreed on was illegal or required something illegal).  Singer & X, yes (similar assumption on X).

[There is a limit to that though.  Consider what you might see in a TV crime drama "I don't care how you do it, just get rid of this guy".]

[M T]

If the appeals court invalidates convictions, can those that spent time in jail sue(?) to get compensated for that time?

One might think that Singer conned the investigation/prosecution team into being lenient on him because there were all these juicy big-name targets that only he could bring in.   A $22K trailer is not a jail cell.

I'm not a lawyer and don't know the details of each charge or the applicable laws. But it seems to me that conspiracies were between Singer and each set of parent(s).  If Singer, unbeknownst to the parents P, pays person X to perform some illegal act, say, change SAT scores,, I would not normally think that P and X conspired.  P & Singer, yes (depending on whether P was, or should have been, aware that the act they agreed on was illegal or required something illegal).  Singer & X, yes (similar assumption on X).

[There is a limit to that though.  Consider what you might see in a TV crime drama "I don't care how you do it, just get rid of this guy".]