WASHINGTON (AP) — Barely into the new school year, President Barack Obama issued a tough-love message to students and teachers on Monday: Their year in the classroom should be longer, and poorly performing teachers should get out.

American students are falling behind their foreign counterparts, especially in math and science, and that’s got to change, Obama said. Seeking to revive a sense of urgency that education reform may have lost amid the recession’s focus on the economy, Obama declared that the future of the country is at stake.

“Whether jobs are created here, high-end jobs that support families and support the future of the American people, is going to depend on whether or not we can do something about these schools,” the president said in an interview on NBC’s “Today” show.

U.S. schools through high school offer an average of 180 instruction days per year, according to the Education Commission of the States, compared to an average of 197 days for lower grades and 196 days for upper grades in countries with the best student achievement levels, including Japan, South Korea, Germany and New Zealand.

“That month makes a difference,” the president said. “It means that kids are losing a lot of what they learn during the school year during the summer. It’s especially severe for poorer kids who may not see as many books in the house during the summers, aren’t getting as many educational opportunities.”