There is a wealth of remote sensing education resources on the Web.  We are constantly seeing new ones appear, while older ones are updated, moved, or disappear.  The following is a selection that might be of interest.  We try to keep links up to date on a semi-regular basis, but have no control over these sites, and links might get broken.

AmericaView Resource Sharing Web Portal - Contains a wide assortment of resources with tags as to intended education level - https://ckan.americaview.org/

Canada Centre for Mapping and Earth Observation Tutorial: Fundamentals of Remote Sensing - Designed for senior high school or early university level - http://www.nrcan.gc.ca/earth-sciences/geomatics/satellite-imagery-air-photos/satellite-imagery-products/educational-resources/9309

Geospatial Revolution - A series of videos providing an introduction to geospatial technologies - http://www.geospatialrevolution.psu.edu/

Multispec Tutorials - Tutorials specific to this widely used free remote sensing software - https://engineering.purdue.edu/~biehl/MultiSpec/tutorials.html

NASA education materials - These materials are mostly geared for K-12 students - https://landsat.gsfc.nasa.gov/outreach/educator-resources/

USGS Tracking Change Over Time - Intended for students in grades 5–8, the lesson plan is flexible and may be used as a student self-guided tutorial or as a teacher-led class lesson - http://pubs.usgs.gov/gip/133/ 

Syracuse University - Working with GIS data - Provides definitions and lists free, open-source software resources - https://onlinegrad.syracuse.edu/blog/gis-data/