CLS Handbooks & Medical Forms The CLS Handbook and the K-2 Handbook are available for download in their entirety at the following links. CLS Handbook 2019-20 Supplemental Handbook For Grades K-2 ISD 622 Medical Forms Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email a link to a friend (Opens in new window)