This is only a partial revised list of both Allegheny and Westmoreland counties. I wish I could have found the entire list with the other areas you asked about.
I posted this on another thread ages ago. It may be a year or so outdated but I would assume there aren't any drastic changes. Hope this helps!
They are ranked as best-performing out of the 498 total school districts in PA.
1 Upper St. Clair Township School District (Allegheny)
3 Mount Lebanon School District (Allegheny)
4 Hampton Township School District (Allegheny)
9 North Allegheny School District (Allegheny)
15 South Fayette Township School District (Allegheny)
17 Franklin Regional School District (Westmoreland)
18 Fox Chapel Area School District (Allegheny)
26 Quaker Valley School District (Allegheny)
27 Pine-Richland School District (Allegheny)
35 Bethel Park School District (Allegheny)
42 West Jefferson Hills School District (Allegheny)
44 Greater Latrobe School District (Westmoreland)
46 Greensburg Salem School District (Westmoreland)
48 North Hills School District (Allegheny)
50 Penn-Trafford School District (Westmoreland)
55 Kiski Area School District (Armstrong, Westmoreland)
58 West Allegheny School District (Allegheny)
60 Moon Area School District (Allegheny)
63 Norwin School District (Westmoreland)
72 Freeport Area School District (Armstrong, Westmoreland)
77 Hempfield Area School District (Westmoreland)
83 Avonworth School District (Allegheny)
97 Brentwood Borough School District (Allegheny)
101 Baldwin-Whitehall School District (Allegheny)
102 Montour School District (Allegheny)
108 South Park School District (Allegheny)
118 Plum Borough School District (Allegheny)
128 Mount Pleasant Area School District (Westmoreland)
136 Burrell School District (Westmoreland)
139 Deer Lakes School District (Allegheny)
140 Allegheny Valley School District (Allegheny)
143 Riverview School District (Allegheny)
145 Chartiers Valley School District (Allegheny)
153 Derry Area School District (Westmoreland)
166 Northgate School District (Allegheny)
173 Gateway School District (Allegheny)
177 Leechburg Area School District (Armstrong, Westmoreland)
187 Ligonier Valley School District (Westmoreland)
200 Shaler Area School District (Allegheny)
205 Belle Vernon Area School District (Fayette, Westmoreland)
208 Carlynton School District (Allegheny)
211 Highlands School District (Allegheny)
221 Elizabeth Forward School District (Allegheny)
222 Jeannette City School District (Westmoreland)
243 Yough School District (Westmoreland)
251 Keystone Oaks School District (Allegheny)
291 Southmoreland School District (Fayette, Westmoreland)
359 New Kensington-Arnold School District (Westmoreland)
405 Monessen City School District (Westmoreland)
417 West Mifflin Area School District (Allegheny)
418 East Allegheny School District (Allegheny)
432 Cornell School District (Allegheny)
440 South Allegheny School District (Allegheny)
441 Steel Valley School District (Allegheny)
464 Penn Hills School District (Allegheny)
470 Pittsburgh Public School District (Allegheny)
474 Woodland Hills School District (Allegheny)
481 McKeesport Area School District (Allegheny)
492 Sto-Rox School District (Allegheny)
493 Duquesne City School District (Allegheny)
495 Clairton City School District (Allegheny)
496 Wilkinsburg Borough School District (Allegheny)