Rich, it still asks me to enter this schID value as I press the button on my form.
Now I reduced the code to this:
Dim Copies As Integer
Dim RepName As String
Copies = Me.psbPostersCnt
RepName = "rptPosters"
DoCmd.OpenReport RepName, acViewPreview, , "[schID]=" & Me![schID]
DoCmd.PrintOut...