Joedy McCreary / The Associated Press

Testing the NBA waters seemingly has become a thing of the past for college players. These days, they’re likely either in or out.

The reason: Players have less time to make a decision.

A new NCAA rule says players who entered the NBA draft early but want to return to school only have until next week to withdraw. That April 10 deadline is about a month earlier than before and 19 days before the NBA requires players to say they’re entering early.

Not surprisingly, the NCAA and NBA are not on the same page.

The NCAA says the change keeps players focused on academics and gives coaches a measure of certainty for their rosters as they prepare for the next year.

NBA Commissioner David Stern isn’t buying it. His league says underclassmen have until April 29 to enter the draft and may withdraw from it by June 18 — more than two months later than the NCAA allows.

“I believe it makes it harder for the player, but that’s a can that I don’t want to open up other than to say that we would like to make it as easy for the players as possible,” Stern said. “And if the NCAA would spend a little less time talking about whether players should stay in school for one year or two years and enforce their rules equally so that hockey players can talk to agents but basketball players can’t?

“I think, to me, the most important thing is to get kids in college the most informed advice they can get without losing their eligibility,” Stern added. “That’s what they should be focusing on, and hopefully they’ll get around to it because it seems fair and just.”

Villanova coach Jay Wright says he’s taking a wait-and-see approach this first year, pointing to former guard Kyle Lowry as an example of someone who benefited from the old system. Lowry entered the 2006 draft pool early but didn’t immediately hire an agent, didn’t decide to stay in until nearly the last minute — and wound up being picked in the first round by Memphis.

“He was able to go through workouts, and by the end of the workouts, we were able to see he was going to be a first-round pick,” Wright said. “Now, you’ve kind of just got to make your decision. You’ve got to base it based on what agents tell you and what kind of information we can get. But you don’t really get to work yourself into a spot in the workouts. It’s different. I don’t know yet.

“I’m going to reserve judgment and see how it goes this year.”

The rule, adopted last April and put into effect Aug. 1, is crafted so the deadline falls on the day before the start of the spring signing period. In theory, that gives coaches who lose a player a chance to find a quality replacement.

In reality, many recruits talented enough to replace them already have settled on their schools by then. Only seven of the top 50 players rated by for 2012 have yet to sign their letters of intent.