Use sp_rename:
EXEC sp_rename 'Stu_Table', 'Stu_Table_10'
You can find documentation on this procedure on MSDN.
If you need to include a schema name, this can only be included in the first parameter (that is, this cannot be used to move a table from one schema to another). So, for example, this is valid:
EXEC sp_rename 'myschema.Stu_Table', 'Stu_Table_10'
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