Healthy People  - A report that tracks the progress of public health objectives in meeting their goals by the end of the decade. 

Years - Latest available. 
Geography - PA.
Source - PA Department of Health, Bureau of Health Statistics and Research.
Phone - (717)783-2548

Growth Screens / BMI-for-age percentile - Report containing BMI data with percentiles showing percent of students underweight, normal weight, at risk for overweight, and overweight or obese.

Years - 2006-latest available. 
Geography - PA, Counties, Health Districts.
Source - PA Department of Health (accuracy lies with the reporting Educational Institutions)