Teacher Planet is a site that has a huge collection of links, resources, lesson plans, templates, rubrics, worksheets and more. The resources are sorted by subject and type and there are some really good resources available. Many of the resources are links to external sites.
" 'Impossible!' you say? Look, we can't grade the essays for you, but we can reduce the repetitive, inefficient manual labor involved - and in doing so we open up a new world of invaluable student data."
This is in Beta version so it is being offered for free at the moment. It sounds like it will eventually become a paid service - but maybe it's worth the price for those of you that grade a lot of rubric-based essays.
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