By WHAV Staff | Haverhill School Superintendent Margaret Marotta. (WHAV News file photograph.) Haverhill school grades from pre-kindergarten to fourth are back to school in person Friday, but dealing with the lingering effects of Wednesday’s ransomware attack. School buildings will not have standard internet, but a “workaround” is in place to bring internet in from outside to use such programs as SchoolBrains, Google programming and eSped. Haverhill Superintendent Margaret Marotta told the School Committee Thursday night there are also certain hotspots operating within the schools for nurses, clerks and others to check student safety issues. Marotta briefed members on the extent of the attack.