Is there a correlation between schemas and social constructs? While studying Piaget's stages of cognitive development in Educational Psychology, the textbook talks about Piaget using the idea of "schemas" which are mental representations or ideas about what things are and how we deal with them.

I also stumbled upon the theory of social constructionism.  While learning psychology, should I look at these as a correlation or two separate entities?  Also in the field of psychology, does one theory have precedence over another?
Yes the two theories are related, but the theories come from two different fields, cogintive science and sociology. First the definitions :


  In psychology and cognitive science, a schema (plural schemata or
  schemas) describes a pattern of thought or behavior that organizes
  categories of information and the relationships among them


.


  Social constructionism or the social construction of reality
  (also social concept) is a theory of knowledge in sociology and
  communication theory that examines the development of jointly
  constructed understandings of the world that form the basis for shared
  assumptions about reality


The social construct is the jointly constructed understanding of many individuals. The understanding of one individual is stored as a schema.