The Board of Education recognizes that the personal, social, physical, and educational growth of children will vary and that they should be placed in the educational setting most appropriate to their needs at the various stages of their growth.

It shall be the policy of the Board that each student be moved forward in a continuous pattern of achievement and growth that is in harmony with his/her own development.

Such pattern should coincide with the system of grade levels established by this Board and the instructional objectives established for each.

The District Administrator shall develop administrative guidelines for promotion, placement, and retention of students.

118.33(6), Wis. Stats.