The new coronavirus crisis has launched a very large, unplanned experimentwith online learning in the United States.And it has created problems for schoolchildren with limited internet or no internet service.School officials and governments in many areas are trying to give millions of U.S. studentswithout home internet a chance at keeping up with their studies.Many students in rural South Carolina have been having trouble getting onlinesince schools in the U.S. state closed.But recently, six buses equipped with WiFi internet came to help.The state has sent hundreds of buses to rural areas since schools closed because of the coronavirus crisis.The buses broadcast high-speed internet in an area the size of a small parking lot.Parents can drive up in their cars and their children can use the internet inside the vehicles.One of the buses is outside of the apartment building of Lacheyle Moore.She had been limiting her mobile phone usageso that her daughter could use the data on her mobile plan to do schoolwork.Mobile serviced providers charge extra money if people use more data than their plan permits."I have to put extra data on my phone to make sure her work gets done," said Moore.Moore works as a cashier. She said she changed her work hours to help teach her two children.It is estimated that three million students do not have internet service at homebecause of the high cost and gaps in availability.Some studies suggest that these students are more likely to be students of color,from low-income families or have parents with lower education levels.The nation's largest school districts are spending millions of dollarsto provide devices and internet connections for students.These include the cities of Los Angeles and New York.Smaller districts are finding ways to improve wireless internetin school parking lots and provide hot spots for internet service.Others are using paper schoolwork and books.Maura McInerney is the legal director of the Education Law Center,which supports policies to help low-income students.She said the school closings are causing these children to fall behind further.Lower-income school districts are forced to find other waysto meet the educational needs of their students.In Fairfield County, South Carolina, 51 percent of families have no high-speed internet.Those numbers come from an Associated Press study of census information.It is estimated that 18 percent of all U.S. students do not have high-speed internet."Lots of mothers and fathers are really not equipped to be home school parents,"said J.R. Green, the top school official in his district.In South Carolina, school districts requested hundreds of busesin a program targeting low-income and rural areas, state education spokesperson Ryan Brown said.The state was ready to provide more buses, but Brown saidthat internet service providers' offers of low-cost and even free service plans lessened the demand.The Philadelphia School District banned online schooling during the early days of the school closingsbecause only about half the district's high school students have a laptop or tablet and home internet service.Now, it appears that schools are likely to be closed for a longer period of time.Philadelphia plans to buy 50,000 Chromebook tablets and begin online schooling by the middle of April.Based in Philadelphia, the company Comcast has promisedto increase speeds of its $10-a-month plan for low-income school families.It also is offering two months of free service."We have the $10 internet (plan). It's not for doing lessons, because it's really slow,"said parent Cecilia Thompson who is 54 years old.She said she would need a higher internet speed to use the Google classroom, which is too costly for her.Thompson cannot work because of her health.She lives with her 21-year-old son, a student with autism, who goes to Martin Luther King High School.Mike Looney is the superintendent of Fulton County schools in Georgia.He said parents should take offers for reduced-cost internet from service providers.But he also wants the Federal Communications Commission to put money that was once usedfor lowering costs of school internet toward supplying students with devices and internet at home.It is an idea that has support from some U.S. senators.In central Ohio, Hilliard City Schools provided students with Apple iPadsthey can use to download, complete and then submit homework.The iPads permit them to do much of their work without internet,says district Superintendent John Marschhausen.But they will need to connect in order to submit completed work and receive their new lessons.The district's nearly 25 schools are extending WiFi into their parking lotsso families can complete downloads from their vehicles.Marschhausen said he thinks most students will not find the changes difficult.But he worries about the major change for younger studentswho usually spend less than half an hour on their devices in the classroom."We're going to have to do a lot of adapting...and a lot of learning along with our familiesif this is truly something that will continue into the summer," he said.