Three teenagers have been charged with planning to sell pills inside a local school.

An accused supplier and dealers, even a weapon – deputies said this was a drug operation inside Clover High School, but it was all stopped by one mother who read her son's text message.

"You said drugs that are a variety now that is like a candy machine – everybody has got some," said Roger Meeks.

Meeks was not surprised to hear about the teens and prescription pills, but he was shocked three of his son's classmates were arrested for selling them on campus.

"It is shocking to me, plus it is news to me because that is where I went to school and it was not anything like that around there then," said Meeks.

Detectives unraveled the case when the mother of a 16-year-old boy found a text message to her son telling him he would be able to buy Ritalin at school the next day.

When the teen was questioned, authorities found pills in his book bag.

"Does it surprise me they were arrested? No," said Deanna Snead.

But the case didn't stop there.

Deputies said the teen told two classmates, 17-year-old Michael Richter, who he claimed gave him the pills to sell in exchange for a cut of the profits, and 17-year-old Alex Littlejohn.

Deputies said they found Percocet and Hydrocodone pills in his book bag.

They deputy's report said Richter admitted he gave the pills away, but he claimed he didn't do it for cash, but for help with his school work.

Littlejohn and Richter face numerous drug charges.

The 16-year-old also faces weapon's charges.

Authorities said he was carrying a knife on campus.