The following prints out sheets as desired based on menu choice, but
without On Error line bombs immediately with 'Type Mismatch' at indicated
line:
Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Address < "$A$1" Then Exit Sub
On Error GoTo Quit '<-- Without this it bombs where indicated below
Dim MonArr, TueArr, WedArr, ThuArr, v, i As Long
MonArr = Array("Intermediate Computer", "Wellness", "Supported
Employment", "Understanding Your Medications", "Creative Writing",
"Picking Up The Pieces")
TueArr = Array("LIFTT", "Wellness", "WRAP", "Sign Language", "Beginning
Computer", "Anger Management")
WedArr = Array("Intermediate Computer", "Wellness", "Supported
Employment", "Understanding Your Symptoms", "WRAP", "Anger Management")
ThuArr = Array("Picking Up The Pieces", "Wellness", "LIFTT", "Adult Basic
Education", "Beginning Computer", "Creative Writing")
Select Case Target.Value
Case "Monday"
v = MonArr
Case "Tuesday"
v = TueArr
Case "Wednesday"
v = WedArr
Case "Thursday"
v = ThuArr
Case "Friday"
Range("A1") = "Wellness"
GoTo Units
End Select
For i = LBound(v) To UBound(v) '<-- Type Mismatch points here
Range("A1") = (v(i))
Select Case v(i)
Case "Beginning Computer", "Intermediate Computer", "Adult Basic
Education", "Creative Writing", "Sign Language"
Range("A14:A20").EntireRow.Hidden = True
Range("E11").Value = 4
Case Else
ActiveSheet.Rows.Hidden = False
Range("E11").Value = 11
End Select
ActiveSheet.UsedRange
ActiveSheet.PrintOut
Next i
Units:
Sheets(2).Visible = True
With Sheets(2)
..Range("A1") = "Maintenance Signups": .PrintOut
..Range("A1") = "Food Service Signups": .PrintOut
End With
Sheets(2).Visible = False
Quit:
End Sub

How to prevent it so I can remove On Error

--
David