Unfortunately for the Scottish Schools Athletic Association, entries for the pentathlon have been hit by the fact that the Scottish Athletics Federation is staging its under-17 and under-20 championships at Grangemouth on Sunday.
Scott Mcinlay (Strathallan) will defend the senior boys' pentathlon title and Matthew Thompson (Merchiston Castle) will be out to retain his Group B title. Cumbernauld High's Alistair McDiarmid is also one to watch.
The girls' events have been hit hardest.
However, entries for the relay championships are up with a total of 166, including primary schools, entered.