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Effects on Learning of Small Class Sizes
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Description
~~~~~~~~~~~

a cross-section from 1985-89

*number of observations* : 5748

*observation* : individuals

*country* : United States

Usage
~~~~~

::

    data(Star)

Format
~~~~~~

A dataframe containing :

tmathssk
    total math scaled score

treadssk
    total reading scaled score

classk
    type of class, a factor with levels
    (regular,small.class,regular.with.aide)

totexpk
    years of total teaching experience

sex
    a factor with levels (boy,girl)

freelunk
    qualified for free lunch ?

race
    a factor with levels (white,black,other)

schidkn
    school indicator variable

Source
~~~~~~

Project STAR
`http://www.heros-inc.org/star.htm <http://www.heros-inc.org/star.htm>`_.

References
~~~~~~~~~~

Stock, James H. and Mark W. Watson (2003) *Introduction to
Econometrics*, Addison-Wesley Educational Publishers,
`http://wps.aw.com/aw\_stockwatsn\_economtrcs\_1 <http://wps.aw.com/aw_stockwatsn_economtrcs_1>`_,
chapter 11.

See Also
~~~~~~~~

``Index.Source``, ``Index.Economics``, ``Index.Econometrics``,
``Index.Observations``
