R.I. Gen. Laws § 44-5-44 — Collection and publication of property tax data

(a) The department of revenue shall annually make and publicly issue comprehensive assessment
ratio studies of the average level of assessment and the degree of assessment uniformity
within each town and city. The department of revenue shall also annually compute and
publicly issue the Russell Index of Inequality within each town and city.
(b) The department of revenue shall require assessors and other officers to report to
it data on assessed valuations and other features of the property tax for the periods
and in the form and content that the department of revenue requires. The department
of revenue shall construct and maintain its system for the collection and analysis
of property tax facts to enable it to make intrastate comparisons as well as interstate
comparisons based on property tax and assessment ratio data compiled for other states
by the United States Bureau of the Census or any agency successor to the Bureau.