Teenage student Hector Montez bought his teacher, Thomas Walser, a pair of 1982 Nike trainers that Coach Walser had apparently wanted since he was 12 years old.
The video shows Hector getting up in front of the rest of the class, putting the box on the coach's desk, thanking him for 'always keeping it real', and presenting the gift to Coach Walser, who then pulls him in for a big hug.
Hector tweeted, 'It's good to give back to the man who's always been on my side,' alongside a video in which Coach Walser is shocked by the gift, and then hugs Hector.
The tweet has since gone viral, retweeted 110k times and liked 190k times.
Thousands of people have commented on the heart-warming video, applauding Hector and Coach Walser for the kindness they've shown towards each other.
'That is so sweet! It's kids like you that make being a teacher worthwhile.'
'You are an amazing person and was taught so well. I love this! Keep it up. Good things are coming your way.'
'It's never 2 late to have a happy childhood. Coach, enjoy 6th grade again. Hector, your kindness is admirable.'
'Hector, you are an inspiration! Your heart is is such a great place!'
'The world needs more people like you! You were made to be awesome! #inspiration #kindness.'
Coach Walser also tweeted about the kind act:
Since the video, Nike have sent Hector his own pair of trainers!
'Your teacher inspired you, and you inspired us. Continue to be the change you want to see in the world,' read a letter inside the box.
Coach Walser was also surprised that Hector had guessed his shoe size properly!