I always love stumbling across a free resource put together by Google. Here is another–CS First is for teachers of tech or Computer Science. Google has put together a multi-faceted curriculum for a Computer Science club or for use in a classroom. Their lessons and resources are always top-notch–these are mostly geared towards 4th-8th grade but there are lots of materials that could be adapted for other grade levels. To learn more go to https://www.cs-first.com/.