getting tables list of other schema too

Hi,

I have postgres 9.6 cluster running on centos 7 machine.

when I set search_path to any user made schema with below command

[enterprisedb(at)stg-edb02 ~ 01:51:39]$ psql edb
edb=# \c test

set search_path to college;

and after listing the tables with command \dt, we should get list of
tables of schema college only.

but here I am getting list of tables of schema college and list of
tables of schema sys along with it.

Why is it happening, please suggest.

test=# \dt
List of relations
Schema | Name | Type | Owner
--------+---------------------------------+-------+--------------
college | ta_rule_error | table | college
college | team_import | table | college
college | test_24022021 | table | enterprisedb
sys | callback_queue_table | table | enterprisedb
sys | dual | table | enterprisedb
sys | edb$session_wait_history | table | enterprisedb
sys | edb$session_waits | table | enterprisedb
sys | edb$snap | table | enterprisedb
sys | edb$stat_all_indexes | table | enterprisedb
sys | edb$stat_all_tables | table | enterprisedb
sys | edb$stat_database | table | enterprisedb
sys | edb$statio_all_indexes | table | enterprisedb
sys | edb$statio_all_tables | table | enterprisedb
sys | edb$system_waits | table | enterprisedb
sys | plsql_profiler_rawdata | table | enterprisedb
sys | plsql_profiler_runs | table | enterprisedb
sys | plsql_profiler_units | table | enterprisedb
sys | product_component_version | table | enterprisedb
sys | scheduler_0100_component_name | table | college
sys | scheduler_0200_program | table | college
sys | scheduler_0250_program_argument | table | college
sys | scheduler_0300_schedule | table | college
sys | scheduler_0400_job | table | college
sys | scheduler_0450_job_argument | table | college