Boston teachers staged informational pickets at more than 100 schools, demanding higher wages and more support for students with special needs.They’re not walking off the job, but they are fighting for new contracts with higher wages and more support for students with special needs.One of the informational pickets for the Boston Teachers Union marched through Roxbury Crossing before school on Thursday.”We’ve been at the bargaining table for almost a year. We started in February of last year, and here we are. We’ve made some progress on minor issues, but on the issues that are core to our schools and our educators, the city has not come up with reasonable responses to our reasonable proposals,” said BTU president Erik Berg. Berg said one of the big issues involves inclusion. The union is calling for separate teachers for students with disabilities and multilingual learners.Another issue is pay.”It’s about a reasonable wage increase …