The first extensive telegraph network was the visual telegraph. In 1791 the Frenchman Claude Chappe used a visual network (which consisted of a telescope, a clock, a codebook, and black and white panels) to send a message ten miles.
Page Content. The School Performance Profile provides the public with a comprehensive overview of student academic performance in every Pennsylvania public school building, including traditional public schools, charter schools, cyber charter schools and career and technology centers.
Performance/Current Performance (Top Box or Mean Score): One of the standard elements on the Dashboard is the Current Performance graphic, which allows the user to view results for a selected survey question compared to the HSTM Database and a system database (if applicable).