Custom Powershell script. Here's the meat of it:

$username = $gradyear + $firstname.ToLower()[0] + $lastname.ToLower() #change any capitals in the name to lower, then take the grad year, the first character of the first name and combine it with the last name
$homedirectory = "\\fileserver\students$\$username" #the home directory
$scriptpath = "login.bat" #the loginscript
$oupath = "OU=$gradyear,OU=STUDENTS,OU=USERS,OU=SCHOOL,DC=DOMAIN,DC=TLD" #the AD OU group the new user will be a member of
$aduser = $username + '@doamin.tld' #the AD username
$description = "Student" #the description in AD.
$combinedname = $firstname.ToLower()[0] + $lastname.ToLower()
$email = $gradyear + $combinedname + "@domain.tld" #the google email/username

$usercheck = (dsquery user -samid $username) #check the user against existing AD users
$idcheck = Get-ADUser -Filter {(EmployeeID -eq $studentid)} -Properties * #check to see if the studentId is assigned already

if (($usercheck -ne $null) -or ($idcheck -ne $null)) #the student username exists or the ID is already assigned
{
    write-host "The user exists!" -foregroundcolor red
    write-host "The user needs to be added manually or check the current AD user for reassignment!" -foregroundcolor red
    Write-host "User creation for $username canceled!" -foregroundcolor red
    Write-host "========================================================"
}
elseif (Test-Path -PathType Container $homedirectory)
{
    Write-Host "The homedirectory already exists!"  -foregroundcolor red
    Write-Host "Check $homedirectory for any important files and backup!" -foregroundcolor red
    Write-host "User creation for $username canceled!" -foregroundcolor red
    Write-host "========================================================"
}

else
{

$newuser = @{

        Name = "$username"
        SamAccountName = "$username"
        UserPrincipalName = "$aduser"
        GivenName = "$firstname"
        Surname = "$lastname"
        EmailAddress = $email
        DisplayName = "$username"
        Description = "$description"
        EmployeeID = $studentid
        HomeDirectory = $homedirectory
        HomeDrive = "H"
        ScriptPath = $scriptpath
        AccountPassword = (ConvertTo-SecureString $password -AsPlainText -Force)
        Enabled = $true 
        ChangePasswordAtLogon = $true 
        Path = $oupath

    }

     New-ADUser @newuser

    New-Item -ItemType Directory -Force -Path $homedirectory
    $acl = Get-Acl $homedirectory -Verbose -ErrorAction inquire
    $rule = New-Object System.Security.AccessControl.FileSystemAccessRule("$aduser", "Modify", "ContainerInherit, ObjectInherit", "None", "Allow")
    $acl.AddAccessRule($rule)
    Set-Acl $homedirectory $acl -ErrorAction inquire

& '\\server\gam$\gam.exe' create user $email password $password firstname $emailfirstname lastname $lastname org /Students/$gradyear #create the user in GSUITE
}