How to create privacy/security for kids bedroom windows located in the fron of a house facing the street?

My father as well as we have been residence sport for a 3-4 room home for a family. we am anticipating which a infancy of houses which we demeanour during have during slightest 1-2 bedrooms (not a master) located pound in a front confronting a street. There is zero in front of a windows alternative than grass. This concerns me for remoteness as well as confidence perposes. we wish to someway emanate a separator to seperate a windows from a travel though restraint it with a full-blown wall. we was meditative of may be planting underbrush or something next a windows to assistance keep invaders out, pouring a concrete square fluctuating out from underneath a windows, as well as afterwards office building a half-wall or flattering blockade to hang a patio. This was usually an thought we mulled over though would conclude any alternative ideas which we competence have. My usually order is which we wish to keep quell appeal, please.