I can find a telepaths in any class of students.
First get 30 decks of the cheapest cards. Throw out court cards and jokers.
Pair up the members of the class. Have one transmit the suit and one receive. Use any kind of barrier you want. Telepathy may not be electromagnetic but may work by quantum synchronicity changing the shape of the Schrödinger function dropping to a lower continuum
Remove the member pairs who show the lowest scores
With a group of 60 or 70 (30 pairs) with 5 trials you usually will find a pair of people who score above average every time. They are telepathic at least with each other.
But telepathy is a delicate hothouse flower. Telepaths are extremely sensitive people and anything may upset them. The attention of winning and people looking at them may upset them. Then telepathy goes away and you need to carefully examine the circumstances.
That's how some of the famous Duke Parapsychology Studies where conducted.
Of course you don't need people. Just do the above with 60 decks of cards paired. Shuffle and compare the pairs. In 5 rounds you will find a pair of decks that are in synchronicity. Or use 60 pennies as pairs.
Because 2^5 = 32. So in 5 rounds you will have winnowed down to a 3.1% chance.
The self delusion was enhanced by discarding the losers which were the control groups.
I got that from Martin Gardner's Fads and Fallacies in the Name of Science