This spring, nearly 200,000 Minnesota students will take science tests online, and some school districts are already worried about problems, the Associated Press reports. Some educators say updating technology for the state-mandated testing has brought them headaches and expense. In a few cases, schools with older computers will send students to other buildings, instead of overhauling their computer systems. State officials said they’ve spent months preparing schools for the online science tests, in hopes of avoiding glitches like the one that invalidated hundreds of math tests last year. "Given all the pre-work we’ve done, I am confident it will go more smoothly than it did last year," said Christy Hovanetz Lassila, assistant state education commissioner for accountability and improvement. "But, again, there are so many opportunities for the process to break down."