FTE calculations for Water Use Reduction and Bikes /Showers

You should always be consistent with numbers like building occupancy -- but LEED can still allow for using a tweaked FTE count for specific circumstances. In the credit narrative, be clear about how you derived the FTE count, why it's different from the full project FTE count, and if you're still concerned, cite the Reference Guide page number. I'm not very familiar with LEED for Schools, but other LEED systems allow occupancy count tweaks for this credit in certain circumstances. For example, inpatients in hospitals aren't considered to be biking.

The methods for calculating occupancy, including FTE, vary by credit. So the reference guide instructions that FTE occupants are to be consistent across all credits aren't necessarily correct in all cases. For example, SSc4.2 is based on peak, while WEc3 uses annual average. Add in multiple shifts, and that changes it even more.