What is considered a high note on trumpet i can hit the C in staff?

The C in the staff, also known as middle C, is not considered a high note on the trumpet. While it is higher than the trumpet's lowest note, which is the open F below the staff, it is not particularly difficult to play and falls within the middle register of the instrument.

Generally, notes such as the D, E, and F above the staff are regarded as higher notes on the trumpet. These require a higher level of skill and more precise technique to play consistently and with good tone quality. They fall within the upper middle and high registers of the trumpet.