The following search engines are specifically designed for MS/HS students. They give access to peer-reviewed journals, academic articles, and credible resources to help with all of your research needs.
Google Scholar Easy to search almost any topic. Articles can be saved, and the database also help cite your sources.
Educational Resources Information Center (ERIC) Access to over 1 million records. Many are peer-reviewed, and cover virtually any topic need for a research project.
The following search engines are specifically for elementary students! They are fun, colorful, and easy to search. They have articles, videos, games, crafts, and experiments.