The video was posted along with several pictures of the school's Maggie Kendall at the 2015 Rose Parade. Kendall was invited to the New Year's Day parade after winning the Dream Big Teacher Challenge.
Kendall, head of the Animal Science Department, applied for a $100,000 grant through Farmers Insurance's Thank a Million Teachers program.
Black was on the Rose Parade float for Farmer's Insurance, riding with his mentor and former teacher, Debbie Devine, as well as the winners of the contest.
Kendall and her students learned they won the grant on Dec. 10. The prize will be used to build an indoor riding arena on the northwest corner of the campus at 3857 W. 111th St. in Mount Greenwood.
"Take it easy. Keep rockin'. Stay in school," Black said as he wrapped up his video message to students.
The video was posted on a Facebook page titled, "The Barn at Chicago Ag." The page is described as "a community for those who follow and support the students and animals at the Chicago High School for Agricultural Science."
Also posted on the page was a pair of pictures of Kendall, including a selfie with Black and a shot of the teacher seated on the Farmer's Insurance parade float.
"Thank you Farmers Insurance for this wonderful opportunity to promote our program and share our story!" the Facebook post reads.
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