Calculation - option to select max (or min) value

In a calculated column I would like to be able to return the maximum/minimum value from the columns select so I know the highest/lowest scores.

Noted. We'll work on that after this upcoming 3.0.

PS: Not sure if you've seen it, but you can Sort your students by a column, as a kind of 'ranking' method while we have the min/max optionr ready.
Tap&hold on the students column header, sort, and here by column.