The Jewish day school hit just the right sweet spot for them: It’s modern Orthodox but welcomes families of all levels of observance. And tuition costs are far less than at most Jewish day schools in L.A.Economics is one of the main reasons the modern Orthodox community in Dallas is growing. “That’s important, especially for observant families who keep kosher and tend to have more children.”Dallas is home to an estimated 80,000 Jews, six Jewish day schools, and 16 kosher restaurants and caterers, according to the Jewish Federation of Greater Dallas. That puts the Dallas area — including Arlington, Irving, Plano and Richardson — a close second to Houston, the state’s largest Jewish community. A native of Puerto Rico, Ramírez moved to Dallas four months ago from Orlando, where she had worked at a Jewish day school.