This script will create the new users, but it won't then move them based on the user's description? Edit, it appears that Powershell is showing the description field as blank, but it's populated in Active Directory.
[CmdletBinding()]
param(
[Parameter(Mandatory=$true)][string]$filepath #Require file path to import new users
)
Import-Module ActiveDirectory #import AD module
Import-Csv -Path $filepath | New-ADUser -PassThru -OutVariable newusernames #send the new user CSV to new-ADUser and create a variable with the new user accounts.
foreach($newuser in $newusernames)
{
switch -Wildcard ($newuser.Description)
{
"*Kindergartner*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=KindergartenStudentsOU,OU=GrandRidgeStudents,DC=dgwphotos,DC=local" }
"*1stGrader*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=1stGradeStudentsOU,OU=GrandRidgeStudents,DC=dgwphotos,DC=local" }
"*2ndGrader*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=2ndGradeStudentsOU,OU=GrandRidgeStudents,DC=dgwphotos,DC=local" }
"*3rdGrader*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=3rdGradeStudentsOU,OU=GrandRidgeStudents,DC=dgwphotos,DC=local" }
"*4thGrader*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=4thGradeStudentsOU,OU=GrandRidgeStudents,DC=dgwphotos,DC=local" }
"*5thGrader*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=5thGradeStudentsOU,OU=GrandRidgeStudents,DC=dgwphotos,DC=local" }
"*6thGrader*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=6thGradeStudentsOU,OU=GrandRidgeStudents,DC=dgwphotos,DC=local" }
"*Teacher*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=TeachersOU,OU=GrandRidgeStaff,DC=dgwphotos,DC=local" }
"*Administration*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=AdministrationOU,OU=GrandRidgeStaff,DC=dgwphotos,DC=local" }
"*ClassifiedStaff*" {Move-ADObject -Identity $newuser.DistinguishedName -TargetPath "OU=ClassifiedStaffOU,OU=GrandRidgeStaff,DC=dgwphotos,DC=local" }
}
}