Select Goal Seek tab. This worksheet calculates a student grade in an Excel class $($and drops the lowest three homework grades$).$ A student is trying to figure out what score is needed on the final exam to earn an $89\mathrm{.}5$ in the class $($which rounds up to an A$).$ Use goal seek to find the score needed on the final to earn the $89\mathrm{.}5$ as the Final Average.