adding script for set up and calcs

Hi,
Programmer new to Unity.
I’m trying to add a script calc.cs to do set up and calcs with arrays (public static void functions). I could add a bunch of code to the game controller script, but the manual says you can add scripts like this in
Plugins folder so it’s handled before game controller will ref the arrays. Made Plugins folder under Assets folder and added calc.cs there. Start never fires in calc.cs. Added calc.cs to scene manager as second script, no luck.

What am I doing wrong? Thanks

noob error, related to my other question, array was not large enough, no error generated, just wouldn’t do the code. thx