399 A.2d 1136 Mechanicsburg Area School District, Petitioner v. Honorable Caryl M. Kline, Secretary of Education et al., Respondents. Commonwealth Court of Pennsylvania.Argued February 6, 1979 March 23, 1979. Schools — State subsidy — Public School Code of 1949, Act 1949, March 10, P.L. 30 — Personal income valuation of school district — Indispensable party […]