I think you did a really generous thing, though it may look small right now but the students will take it to heart. Big things come in small packages, educating others on bitcoin is valuable to the bitcoin ecosystem as running your own node. Was the $20 in bitcoin or fiat? I would prefer if you gave them bitcoins so they can have their own non custodial wallets and learn how to send/receive bitcoins. Happy Easter!

Giving away bitcoin is very generous.  According to your post you gave 100$ worth of bitcoin so that these high school kids can learn more about bitcoin and its technology. 

I am not here to judge, but I am curious which wallet you suggested them to hold their bitcoin. Do they know how to keep their wallet safe,  and what are they planning to do with that bitcoin?

if your goal is to educate students by giving bitcoin to selected students that is a good thing.

because if you give them btc, of course they will be more serious about learning about bitcoin.

usually teenagers are very good at capturing power when they are taught about bitcoin, especially with the addition as you do by giving btc, so what you do is a positive activity.

Your idea was good because you have created awareness about bitcoin no matter how insignificant you think the effort is. I am sure some of them might not have known bitcoin before but you have introduced it to them. They might not invest in or buy the currency now because most of them are still depending on their parent but they might consider it in the future.  

I also have some reservations about your selfless service. In my country, students in high schools are between the ages of 9-16 years. So I want to add that introducing some of these students to bitcoin at this tender age might become a distraction to them. They should focus more on their academic and social life at this age and not on financial matters. Please don't get me wrong, I commend your effort but I am not comfortable with the ages of your target.

I commend you for your generous act this season. You have done well OP but i am curious to know more on your interactive session with the students. You said  you had a lecture with them on whatsApp how were you able to decipher that they all really understood what you taught because giving them bitcoin after teaching them when you were not there with them does not guarantee that they really understood the process as you can not tell as they are smart kids. I am not i anyway discrediting your good works but i am just curious as to know.

Wow OP,this is something nice that you did on Easter day and I bet you those kids will go out telling people about bitcoin because they have earned $20 in bitcoin which will motivate them to learn more about bitcoin. I don't understand how they got their wallet ? Where you the one that taught them about how to get a noncustodial wallet, if yes. Did you teach them how to use their wallet and to back up their phrase seed. I feel this is too much for them as a newbie for their age. Next time don't introduce them to money,instead just teach them the basics of bitcoin and when they are grown up and they like bitcoin concept, they can learn on their own from when you stopped. This will distract them from their studies because if they tell their friends about this. They may all be looking for watsap groups that gives out bitcoin which is untrue

It is a very good initiative to make students aware about Bitcoin. But since you give $20 to five random students, each student will get $4.  In this case, if you want to pay them via Bitcoin, you will be charged a $0.5-$1 transaction fee when you send that $4 to their Bitcoin address.  And when those students go to sell those bitcoins they will still be charged exactly the same fee.  So this fee may seem unfair as there are small amount transactions. But on the other hand if you pay it in fiat then they won't know much about bitcoin.  So you pay in Bitcoin it will help them to understand about Bitcoin practically.

It's a good thing you did for them. That could make them more curious about Bitcoin and make them interested in being able to adopt Bitcoin as their digital asset. It's also great asking questions and then rewarding them if they answer correctly, as opposed to giving out Bitcoins for free. With things like this they will be indirectly educated and maybe in the future they will become one like us who loves Bitcoin.

That's very generous of you and a very great way to power up the community. I myself am not even familiar with Thier noncustodial wallet yet but that is surely a great experience for those kids to learn such things. That small movement will surely compound. That's a creative and positive step for you to share knowledge and drive to those young people. That's an education for future money. Your kindness to them will be their kindness to other people and their peers. Cheers.

Awesome effort, don't think that what you did is a little thing, pretty sure that no effort is too small in terms of promoting bitcoin, you've probably changed the life of those students and you and them don't know it yet. Change is a ripple effect, only gets bigger as it goes down the line.